Consumers include

heterotroph

Phytoplankton

They are producers; they are floating, microscopic unicellular algae, photosynthetic bacteria, and other groups of organisms capable of photosynthesis are responsible for more that 99% of biological production in the photic zone.

Organisms in Trophic Level 1

Organisms in Trophic Level 2

Ecological efficiency

the fraction of the total energy available at one trophic level that is transformed into work ors omeother usable form of energy at the next high topic level (10% is passed onto the predator, the 90% is for that organism to live, etc)